williamson



(No Model.) l 8 Sheets-Sheet 1.v J. D. WILLIAMSON, Jr.

ELECTRICAL STEERING GEAR.

110.591,995.- Patented Oct. 19,1897.

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me uonms Farms co, Pnooimw..'wnsumnrom n. c.

(No Model.) 8 Sheets-Sheet 2.

J. D. WILLIAMSON, Jr. ELECTRICAL STEERING GEAR.

No. 591,995. Patented Oct. 19,1897.`

WITNESSES: 2M A ma v ATTOR N EY (No Model.) 8 Sheets-Sheet 3 J. D. WILLIAMSON, Jr. ELECTRICAL STEERING GEAR.

Patented Oct. 19,1897.

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INVEN 0R WITNESSES: @www ATTORNEY 8 Sheets-Sheet 4.-

(No Model.)

J. D. WILLIAMSON, Jr. ELECTRICAL STEERING GEAR.

Patented 001;. 19,1897.

ATTORNEY 5W t 8 6 h s S t e e h S uo (No Model.)

' J. D. WILLIAMSON, Jr. ELEGTRIGAL STEERING GEAR.-

No. 591,995. Patented Oct. 19,1897.

WITNESS n ATTORNEY 1H: Nunms wzrsn's co. Fumo-umn, wAsmnsToNvp n ATTORN EY 8 Sheets-Sheet 6.

(No Model.)

J. D. WILLIAMSON, Jr. ELECTRICAL STEERING GEAR.

No. 591,995. Patented Oct'. 19,1897.

WITNESS K (No'Model.) s sheetssheen 7. J. D. WILLIAMSON, J1". ELEGTRICAL STEERING GEAR.

(No Model.)

J. D. WILLIAMSON, J1'.

8 Sheets-Sheet 8.

ELECTRICAL STEERING GEAR.

No. 591,995. Patented Oct. 19,1897.

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7,6 712 WITNESSES: A INVENTOR ATTORNEY nuten STATES PATENT Ormea. v

.IOIIN D. VILLIAMSON, JR., OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO VILLIAMSON BROTHERS OO., OF SAME PLACE.

ELECTRICAL STEERING-GEAR.l

SPECIFICATION forming part of Letters Patent No. 591,995, dated October 19, 1897. Application filed May l5, 1894- Serial No. 511,341. (No model.)

To all whom it may concern:

Be it known that I, JOHN D. WILLIAMSON, J r., of the city and county of Philadelphia, in the State of Pennsylvania, have .invented a new and useful Telemotor for Transmitting Electricity, which invention is fully set forth and illustrated in the following' speciiication and accompanying drawings.

The object of this invention is to provide I o an electric telemotor which shall transmit motion between distant points by means of an electric current, the apparatus being adapted to operate the steering mechanism of a vessel, a turn-table, or other mechanism, in parr 5 ticular where motion of an intermittent character is desired.

The invention will iirst be described in detail and then set forth in the claims.

In the accompanying drawings, Figure 1 is zo a side elevation showing the application of my invention to a steam steering-engine. Fig. 2 is a view in plan of Fig. 1, certain parts being omitted and other parts shown detached for clearness of illustration. Fig. 3 is a view z 5 in plan, upon an enlarged scale, of the transmitting apparatus or current transmitter shown in Figs. 1 and 2. Fig. 4C is a side elevation of Fig. 3. Fig. 5 is a sectional end view of Fig-3. Figs. 6 to 9, inclusive, illus- 3o trate, upon an enlarged scale, certain details of construction shown in Figs. 3, 1, and 5 and hereinafter described. Fig. 10 shows in plan a portion of the receiving apparatus or current-receiver and circuit-interrupter shown in Figs. 1 and 2.` Fig. l1 is a side elevation of Fig. lO. Fig. 12 is a view in plan of the plate marked 70 in Figs. 10 and 11. Fig. 13 is a sectional side elevation of Fig. 12. Fig. 14 is a view in plan of the plate marked 77 in 4o Figs. 10 and 1l. Fig. l5 is a sectional side elevation of Fig. 14. Fig. 16 is a vertical section taken through Fig. 10 at the line o fu. Fig. 17 is a sectional side elevation of the valve-operating mechanism of the steeringengine, hereinafter described. Fig. 18 is a vertical cross-section taken through Fig. 17 at the line x Fig. 19 is a vertical crosssection taken through Fig. A17 at the line y y. Fig. 20 shows in plan an electric lnotor and 5o in end elevation a modified form of brake mechanism for arresting the momentum of brake mechanism shown in Fig. 20.

said motor. Fig. 2l is a side elevation of the Fig. 22 is a view in plan of Fig. 21.

In said iigures the several parts are respec- 5 5 tively indicated by reference letters and numbers as follows:

The letter A, Figs. 1 and 2, indicates that portion of the complete telemotor which may be called the transmitting apparatus or 6o current-transmitter.

B indicates the reeeivingapparatus or combined current receiver and circuit -interrupter, which is connected to an electric motor. O indicates a steering-engine connected to said motor, and D indicates a dynamo or other suitable source of electricity.

In the several figures of the drawings in which the numbers occur the number l indicates a steering-wheel mounted upon a hori- 7o Zontal shaft 2, carried in bearings in a column or standard 3, secured to the floor of the pilothouse or at any other desired point. The shaft 2 is provided with a bevel-wheel 4, which meshes with a bevel-wheel 5, secured to the-upper end of a vertical shaft 6, extending below the deck of the vessel. At the bottom of said shaft 6 is a bevel-wheel 7, which. meshes with a bevel-wheel 8, secured to a horizontal shaft 9, carried in bearings in 8o standards 10. Surrounding the shaft 9 for a portion of its length are two iiXed helical sleeves 11, engaging a loose helical sleeve 12. The sleeve 12 is provided with two disks or flanges 13, between which is secured the forked end of a lever 14 by means of bolts 15, secured to or forming part of said disks. The lever 14 is centered upon a shaft 16, and its other end leads to an electrical switchboard 17, where it is connected by means of a link 9a 18 to a contact arm or lever 19, pivoted at the point 20. A link 21 also connects said lever 14 to contact-arms 22 and 23, pivoted, respectively, at the points 24 25. The arm 19 is adapted to open and close circuits by making contact with the contact-points 26, 27, 28, and 29, located on the switchboard 17. The arm 22 is adapted to open and close circuits by making contact with the contact-points 30 31, and the arm 23 by making contact with ico the contact-points 32 and 33. It is obvious that screw-threads may be substituted for the helical sleeves ll 12 on the shaft 9 for operating the lever li.

Secured to or formed upon the shaft 9 is a worm 3l, which meshes with a worin-wheel 35, carried on the lower end of a vertical shaft 3G. To the upper end of the shaft 3G is se cured an indicator-arm or pointer 37, adapted to move over a transmitting indicator-plate 3S, secured to vertical. standards 39 by means of screws 40. The indicator-arm or pointer 37, as shown in detail in Figs. 3, G, and 7, is provided with a contact-point lil, pivoted to the end of said arm by a pin and provided with a spring lli-3, located in a recess ai, formed in the arm 37.

Distributed around the eircinnferential marginal surface of the plate 38 are vertical pins l-S, against which the contact-point il of the indicator-arm 37 is adapted to iinpinge. iVhen said indicator-arm is moved by the movement of the steering-wheel l, the contact-point il will impinge against one of the pins 4S, and thus cause said point te yield and assume the position shown in dotted lines in. Fig. (3, compressing its spring When said contact-point il passes the pin 11S, its spring l-S will be released from compression and said contact-point will quickly ily into the desired position in line with the main body of the indicator-arm 37. This arrange# ment of pins and spring contact-point prevents sparking when moving the indicatorarm f rom poi nt to point on the indicator-plate ESS. The contact-point l Ais also provided, as shown in Fig. 7, with a binding-screw 4-5, adapted to receive a wire, and with a spiral spring iti, located within a recess a7. The spring lo keeps the contact-point 4l of the arm 237 in contact with the segments or contact-points, numbered from 201 to 231, inclusive, distributed around the circiun'ferential marginal surface of the plate 3S, each of said segments or contact-points being provided with a binding-screw ifi for receiving a wire. Any desired number of segments or contact-points may be located on the plate 3S.

rlhe helical sleeve l2 is provided, as shown in Figs. l, 1, 8, and i), with a brake mechanism which prevents said sleeve Yfrom revolving until the arms 19, 22, and have attained the desired positions. Said mechanism consists of a divided strap 50, secured by a pin 5l in the fork of a fixed bracket or standard 5L. Said strap spans the loose helical sleeve 12, between two disks or col lars 53 53, and its ends are connected by a pin and set-screw 5i, provided with a spring 55, the whole device `forming an automatic frictionbrake.

The current-receiving and circuitinterrupting part l5 of the complete apparatus is shown in Figs. l and 2 and in detail in Figs. l0 to l5. The number 5G indicates an electric motor, which may be of any approved construction provided with brushes 57 58. To the shaft 5f) of this motor is secured a worm (SO, which meshes with a worin-wheel G1, mounted upon a horizontal shaft f5.2. Said shaft (i2 is provided at one end with a worm 63 in mesh with a worm -wheel (il at the bottom of a vertical shaft G5. The upper end `of the shaft 05 provided with a spur-pinion GG in mesh with a spur gear-wheel G7 at the bottom of a vertical shaft GS. Mounted upon and secured to a standard of! is a circular plate 70, to half of the circumferential upper margiiial surface of `which are secured a number of segmentsl or contact pieces numbered from ltll to Qll., inclusive, and provided with binding-scrmrs 72, The spaces between said segments are filled with insulating material, so that said scgmenis and filling will present a level upper surface. rlhe other half of the circumferential upper marginal surface of the plate is provided with rollers 73, carried on pins 7st, mounted in small brackets 75. rfhc vertical shaft US passes loosely through a hole 76 in the center of the plate 70, and has iixed at its upper end a circular plate 77, the under surface of which rests upon the rollers 723 on lthe plate 70, upon which rollers said plato 77 is free to rotate when the shaft 68 is rotated. rlhe under surface of the plate 77 is n'ovided with two long segments or contact-pieces 7S 7n, and one short segment or contact-piece st), each having a binding-screw Bl.. rIlle spaces between said segments are filled with insulating material.

For clearness of illustration, the plates 7l) and 77 are shown in Fig. 2 detached from the other parts of the receiving apparatus, the dotted lines a in said .ligure representing the proper position of said plates, as clearly shown in full lines in Fig. l. Figs. l() and li show said plates together, in detail, the rotary plate 77 being super-posed upon the stationary plate 70. The stationary plate 7l) is shown in detail detached in lf'g.. l2 and 13, and the rotary plate 77 is shown in detailV detached in Figs. ll and il Fig. lf3 is a vertical section taken through both plates 70 77 at the line fn e, Fig. lt), showing the contact between the circuit-inierrupting segment or contact-point Sie on the sla tionary plate 70 with the segment: or ctmtaeb point 8O on the rotary plate 77. Hach o i.' the segments or contact-points numbered from 201 to 231., inclusive, on the plaie 70 may be constructed shown .in said. Fig. li. its therein shown, said segments on the plate 7() are constructed of brass and porcelain or other suitable non-conduetor, and are provided within a bore or tube if with aspring c, which insures perfect contact between said segments and the three segments on the rotary plate 77, which latter segments may also be made of brass and porcelain or other nonconductor, as shown. lt is obvious, however,

that said segments or (nmtact-points may be constructed in any suitable manner, of anyv suitable material, and that any suihible device or contrivance for insuring contact bctween the segments on the plates 70 77 may TOO 591,995 l i s be substituted for the spring arrangement shown. l

The shaft 62 may be connected by means of a clutch 82, Figs. 1 and 2, to a shaft 83, which latter shaft, by means of mechanism now to be described, is adapted to operate the controlling-valve of the steering-engine, (represented generally by the letter C.) The shaft 83 is carried in bearings in the standards 84C 85, and is provided for a portion of its length with screw-threads 86, as shown in Fig. 17. Fitted to and surrounding this screw-threaded shaft is a long sleeve or nut 37, preferably provided with a grooved surface 83. At or near the central part of said sleeve or nut the projections forming the grooves are eut away andtwo half-rings 89 are fitted in, as clearly shown in Figs. 17 and 19. A flanged ring or annular casting 90, which derives movement from the sleeve 87, is held in position between two fixed collars 91 (secured to the sleeve 87) by springs 92, supported and sliding upony rods 93, secured to movable collars 94, said collars 94:'being grooved, so as to fit into the grooves in the sleeve 87. The ring 90 can move laterally' over the entire grooved surface of the sleeve 87 until the springs 92 at one side of said ring are fully compressed. The collars 94c are held by said springs against the two halfrings 89, and said collars can move no farther inwardly than their central positions of origin al adjustment.

Connected to the ring 90 is a lever 95, Fig. 1, pivoted at the point 96 and having connected thereto a rod 97. To the rod 97 is connected one end of a double-armed lever 98, pivoted at the point 99, the other end of said lever being connected to the valve-rod of the steering-engine.

The sleeve 87 has secured to it, near one end, a spur-piiiion 100, Fig. 2, which gears with a gear-wheel 101 on the druin-shaft 102 of the steering-engine. Said shaft 102 carries the usual chaiii-druin 103, operated from the cylinders 101 by connecting-rods 105, crank-shaft 106, and worin-gearing 107 108.

Leading from a dynamo D, or from a battery or other suitable source of electricity, to the contact-points 29 and 33 on the switchboard 17 is a wire 110. A wire 111 connects the two contact-points 26 and 32 andleads to the contact-point 41 on the indicator-arm 37, to which it is secured by the biiiding-screw 45. From the brush 57 of the motor 56 is led a wire 112, which connects with the segment 78 on the rotary plate 77 and also with the contact-point 27 on the switchboard 17 Another wire 113 leads from the brush 58 to the segment 79 on the rotary plate 77 and also to the contact-point 30 on the switchboard 17. A wire 114C connects with the two .contactpoints 28 and 31 on said switchboard and leads to the field of the motor 56, and from said field a wire 115 leads tothe dynamo D. If desired, said field may be excited -through a separate circuit.

The segments or contact-points on the indicator-plate 38 are numbered from 201 to 231, inclusive, and to each of said contactpoints is secured, by means of the bindingscrews 49, one end of a series of wires 71, the other ends of which are connected to the segments or contact-poiiits, likewise numbered from 201 to 231,011 the stationary plate 70, their ends being secured to said points by the binding-screws 72. A wire 116 leads from the circuit-interrupting segment 80 on the rotary plate 77 to an electromagnet 117, and a wire 116n connects said magnet with the wire 115, which leads to the source of electricity. To thearmature of said magnet is secured a brake-slice or brake-bar 118-, said magnet' being adapted, when excited by a current of electricity, to apply said brake-shoe to a brake-Wheel 119 on the shaft 59 of the motor 56 and thus arrest the momentum of the motor.

Instead of operating a brake-slice, the inagnet and its armature may be suitably located and adapted to operate a brake-bar to shortcircuit the wires 112 113 by making contact therewith near the motor, as illustrated in Figs. 20, 21, and 22. In said figures the wires 112 113 are shown connected by wires 112 113a to metal strips or bars 120, located at the top of two standards 121. A lever, or shortcireuiting.brake-bar 122 of non-conducting material, is fulcruined in bearings 123 and is provided at one end with a conducting metal strip or bar 1241, adapted to make contact with the metal strips 120, and is also provided at its other end with an armature 125 for the magnet 117. It will be obvious that when the magnet 117 is excited by a current of electricity from the wires 116 116, said magnet will attract the armature 125 on the lever 122 and cause the bar 124 on said lever to make contact with the strips 120 to which the wires 112 113 are connected, and thus establish a short-circuit between said wires, which are connected to the armature-brushes of the motor. The momentum of the motor Will thus be arrested quickly, by reason of the resistance met with by the current of electricity tending to be generated by the motor (teinporarily converted into a dynamo) by the inomentuin of its armature after the motors circuit with its source of electricity has been broken by the circuit-intcrruptiiig contactpoint 80 on the rotar-y plate 77, as hereinafter described. It is obvious that other forms of electric teleinotor than the one herein de- IOC) IIO

.scribed may be used with the forms of brake ment will revolve the shaft 2 andV b r means of the bevel-wheels 4, 5, 7, and 8 and the vertical shaft C, will also revolve the horizontal shaft il. This revolution of the shaft 0 will, by means et the helical sleeves 11 12, move the upper end of the lever 111 to the right, thus causing the ends of the arm 1) to engage the contact-points 2G and 29 on the switchboard 17 and the ends of the arm 22 to engage the contact-points 30 31, the arm being out of engagement. Said revolution of the shaft 9 will also, by means of the worm 3-1 thereon and the gear-wheel 35, revolve the vertical shaft 3G and move the indicator-arm 37 over the indicator-plate 3S the desired distance to a point representing the desired position of the rudder. `When said indicatorarm has reached the desired point, say over the contact-point 212, the movement of the hand-wheel 1 is stopped. The electric current then entering from the dynamo D through the wire 110 flows through the contact-point 29 and lever 1f) to the contact-point 2G, thence through the wire 111 to the' contact-point L11 on the indicator-arm 37 to the contact-point 212 on the plate 3S. From said contact-point 212 the current passes through one of the wires 71 to the corresliondingly-numbered contact-point 212 on the stationary plate 70, thence to the segment 78 on the plate 77 and through the wire 112 to the brush 57 of the motor 5G, out from the brush 5S, through the wire 113, back to the lever 22 and contactpoints 30 31 on the switchboard 17, back to the iield of the motor through wire 114E and out through the main wire 115 to the dynamo D, thus completing the circuit. -`When said current enters the motor 56 from the wires 112 and 1111, it starts said motor in operation and revolves its shaft 59. This revolution of said shaft will, by means of the gears GO and (S1, revolve the shaft G2 and, the clutch S2 being thrown in, will also revolve the shaft 83. As said shaft S3 revolves, the screwthreads SG thereon cause the sleeve or nut S7 to slide laterally, carrying with it the ilanged ring or annular casting UO. This movement of the ring will, through the instrumentality of the lever 95, rod 07, and lever 98, open the controlling valve or valves of the steering-engine, and thus cause said engine to move the rudder into the desired position. The valve is held open until the movement of the steering-engine causes the gear-wheel 101 on the drum-shaft 102 to revolve the pinion 100. This revolution of the pinion will cause the sleeve S7, to which it is secured, to rotate on the screw-threaded shaft S3 and move backward, thus returning the ring 90 and. lever 95 to their original positions and closing the controlling-valve of the engine. The springs 92 are made strong enough to effect the movement of the ring 00 in both direetions.

Should the valve of the engine stick in its seat or reach the end of its stroke while the shaft S3 is revolving, the ring DO will cease its lateral movement, the sleeve or nut S7,

however, continuing to slide laterally until the springs 92 on one side or the other of said ring, as the case may be, are compressed. Said springs will thus perform theimliortant function ot' preventingbreakage of an y of the valve connections. l do not herein claim ,nur 5c this spring mechanism for operating the valve of the steering-engine, as said mechanism is claimed by me in another' application for Letters Patent `filed herewith and hearing the serial number 511,311. 1n the meantime, while the valve-operating mechanism just dcscribed is being set in operation by the revolution of the shaft U2, said shaft, by means of the screw-threads thereon and the pinion G-t, revolves the vertical shaft G5. This revolution ofthe shaft G5 will, bymeans of the gear-wheels G6 67 and shaft (5S, cause thccircular plate 77 to rotate on top ol' the stationary plate 70. lVhenthe segment 8O on said rotary plate 77 arrives over the circuit-interrupting contact-peint 212, through which the current of electricity is flowing, the circuit is interrupted and said current is 'tlnn'ehy diverted from the motor 5U, which ceases to operate. Said current then ilows through said segment 80 and. the wire 11G to the electromagnet 117, thus establishing' anew circuit with the generator through the wire 11hL and exciting said magnet and causing it to apply the brake-shoe 118 to the brake-wheel lli) on the shaft of the motor or to short-circuit the wires 111 112, in either event arresting the momentum of the motor.

1f the hand-wheel 1 be moved in the opposite direction to that above described, such movement will cause the upper end ol the lever 14- to move to the left andthe arm 1u to engage the contact-points 27 2S on the switchboard 17, and the ends of the arm 225 to engage the contact-points $52 33, the arm bcing out of engagement. Said movement of the steering-wheel 1 will also cause the indicator-arm 37 to move from the point 212 to the desired point on the indicator-plate 35, say the point 21-1. The current of electricity then [lows from the main, through the wire and arm 23, to the contaet-poil'its Si) 52, thence through the wire 111 to the contactpoint -1-1 on the indicator-arm $37 to the point 211 on the plate 3S. From said contact-point 21a the current passes through one of the wires 71 to the correspoiidingly-numbered contact-point 211.1 on the stationary plate 70, thence to the segment 7i) on the plate 77, and through the wire 113 and brush 5S to the motor 5G out through-the brush 57 and wire 112, back to the contact-points 27 28 on the switchboard 17 back to the motor through wire 1liand out through the main wire 115 to the dynamo. As said current enters the motor fie it will cause said motor to set in operation the valve-operating devices, above described, in the opposite direction, and also cause the plate 77 to rotate until the circuit-interruptving segment 8O thereon is brought over the contact-point 21a on the stationary plate 7u,

IOO

when the current will be diverted from the motor through the wire 116 to the magnet 117, thus stopping the motor and arresting its momentum by the brake mechanism, as before described.. If desired, all braking mechanism for arresting the momentum of the mot )r may be omitted, as suoli mechanism is not essential to the successful operation of the apparatus. In such case the wire 116, leadi'ng from the circuit-interrupting contactpoint 8O on the rotary plate 77 may be dispensed with, so that the circuit will be broken when said contact-point arrives over the contact-point on the stationary plate 70, through which the current is flowing.

The electric telemotor herein described, as a practical and efficient device, may be constructed so as to be both durable and very certain in action, having no parts whose action can be easily deranged so long as the integrity of the wires necessary to the several circuits shall be undisturbed. Its comparative simplicity of construction will be manifest as soon as its parts and 'connections and their operation are clearly understood. If applied to the steering of a ship, a helmsman of ordinary intelligence can steer the ship by merel y turning, in the usual manner, a small handwheel with the exercise of but litt-le manual exertion. A

I do not confine myself, except as may be hereinafter specifically claimed, to the precise arrangement and combination of parts shown in the drawings, as they may be varied without departing from my invention. The shaftin g and gearing shown for operating the several parts may be replaced by other equivalent operating mechanism. Any suitable steering-engine, operated by steam or other iiuid, may be substituted for the steering-engine C, or said engine maybe entirely omitted, as it is obvious that the motor 56,if made large enough to develop adequate power, may operate the rudder itself instead of the valve of the engine, or that such a motor may operate the starting and stopping gear of a larger electric motor, any steam-engine, a turn-table, or any other mechanism, in particular where motion of an intermittent character is desired.

Having thus fully described my invention, I claiml. In an electric telemotor, the combination of an electric generator; a current-transmitter provided with numerous contact-points for regulating the extent of movement of the object to be moved; a combined current-receiver and circuit interrupter electrically connected with. the contact-points on said transmitter and provided with a series of stationary contact-points and With a series of movable contact-points, oneof the latter being a circuit-interrupting contact-point connected by a wire with the generator; an electric motor electrically connected with said receiver and interrupter; and means for lnechanically operating said interrupter so as to vcombination with an electric motor in the same circuit and mechanically connected to said rotary plate to impart motion to the same.

3. In an electric telemotor, a current-transmitter having in combination a switchboard provided with contact-points; a shaft provided with one loose and two fixed helical sleeves; a lever secured to said loose sleeve and adapted to open and close circuits at the contact-points on said switchboard; means for preventing the revolution of said loose sleeve before the proper time; and means for revolving said shaft in both directions independently of the electric motor.

4. In an electric telemotor, a current-transmitter having in combination a switchboard provided withy contact-points; a shaft provided with one loose and two fixed helical sleeves; a lever secured `to said loose sleeve and adapted to open and close circuits at the contact-points on said switchboard; a friction-brake mechanism on said loose sleeve; and means for revolving said shaft.

5. In an electric telemotor, a current-transmitter having in combination a switchboard provided with contact-points; a shaft provided with one loose and two fixed helical sleeves; a lever secured to said loose sleeve and adapted to open and close circuits at the contact-points on said switchboard; an adj ustable friction-strap surrounding said loose sleeve; and means for revolving said shaft.

6. In an electric telemotor, a current-transmitter having in combination an indicatorplate provided with contact-points; an indicator-arm secured .to a shaft and provided with a contact-point adapted to make contact with the contact-points on said plate; a Worm- Wheel on said shaft; a shaft provided with a worm in mesh with said worm-wheel; a switchboard provided with contact-points; one loose and two fixed helical sleeves mounted on said worm-shaft; a lever secured to said loose sleeve and adapted to make contact with the contact-points on said switchboard; means for preventing the revolution of said loose sleeve beforethe proper time; and means for revolving said worm-shaft.

7. In an electric telemotor, a current-transmitter having in combination an indicatorplate provided with contact-points; an indicater-arm secured to a shaft and provided with acontact-point; a worm-wheel on said shaft; a shaft provided with a worm in mesh with said worm-Wheel; one loose and two fixed helical sleeves mounted on said wormshaft; a switchboard provided with eight contact-points; a lever having one end se- IOO IIO

cured to said loose sleeve and provided at its other end with arms adapted to open and close circuits at the contact-points on said switchboard; means for preventing the revolution et said loose sleeve before the proper time; and means for revolving said wormshaft.

8. In an electric telemotor, acurrent-transmitter having in combination an indicator transmitting-plate provided on its circumferential marginal surface with numerous 'contact-points, insulated 'from each other, for regulating the extent et' movement of the object to be moved; vertical pins projecting from each of said contact-peints; an indicator-arm adapted to move over said plate and having a contact-peint pivoted to its end for transmitting' the current to the contactpoints on said plate; and a coiled spring, located within a longitudinal recess in said arm, for the automatic adjustment ot said contact-peint.

t). In an electric telemotor, a current-transmitter having in combination an indicator transmitting-plate provided on its circumferential marginal surface with numerous contact-points, insulated from each other7 for regulating the extent of movement of the object te be moved; vertical pins projecting from each oi' said contact-points; an indicator-arm having a yielding, self-adjusting, contact-point pivotcd toits end 'for transmitting the current to the contact-points on said plate; and a coiled spring, located within a vertical recess in said arm, for insuring contact between said contact-point and the contact-points on said plate.

l0. In an electric telemotor, a combined current-receiver and cireuit-interrnpter having in combination a member provided with numerous electrical contact-points and a member provided with a circuit-interrupting contact-point and with two longer contact-points independent of each other and of said circuitinterrupting point, one oi' said members being adapted to rotate in proximity to the other.

ll. In an electric telemotor, a combined eurrent-receiver and circuit-interrupter having in combination a member provided with numerous electrical coiitact-points, and a member provided on its outer marginal surface with a small segmental circuit-interrupting contact-point and with a long segmental contact-point on each side et' said circuit-interrupting point and independent thereof, one ot' said members being adapted to rotate in proximity to the other and cause said segmental contact-points en one member to take an electric currentirom the contact-points on the other member.

I2. In an electric telemotor, the combination of the following-named elements; a combined current receiver and circuit interrupter having a member provided with numerous contact-points, and a member provided with a circuitinterrupting contactpoint and with two longer contact-taunts; an electric motor; and wires directly connecting said motor with said `longer contact-points, se that a current taken `from the other niember by said contactpoints is transmitted through said wires to said motor.

In an electric telemotor7 the combination of the following-named elements; a coinbined current receiver and circuit interrupter having a member provided with nnmerous contact-peints, and a member provided with a circuit `interrupting contactpoint and with two longercontact-points; an electric motor, and wires connecting said motor with said longer contact-points; one ol' said members being operated by said motor so that its rotation will cause said circuit-interrupting contact-point to take the current and thereby interrupt the circuit to the motor.

ll, In an electrictelemotor,a combinedcurrent-receiver and circuit-interrupter having in combination a plato providet'l with numerous contact-points, and a plate provided with a cireuit-interrupting contact-peint and with a contact-point on each side ol' said interrupting-point, one el' said platos heilig adapted to rotate in proximity to the other.

I5. In an electric telemotor,a combined cnrrcnt-receiver and circuit-interrupter7 having in combination a plate provided with minierous contact-points, and a plate provided with one short segmental circuit-i1iterrupting contact-point and with a long segmental. contactpoint en each side et said inlerrupting-point, one of said plates being adapted to rotate in proximity to the other.

lli. In an electric telemotor, a current-receiver having in combination, a stationary plate provided with contact-points and rollers, and a rotary plate adapted to rotate on said rollers and provided with contact-points.

17. In an electric telemotor, a current-rcceiver having, in combination, a stationary plate provided on its upper surface with contact-points and rollers7 and a rotary plate supported upon said rollers and provided on its lower surface with one short and two lon segmental contact-points.

18. In an electric telemotor, a current-receiver having, in combination, a stationary plate provided on its uppersurlface with contact-points and rollers7 anda rotaryplate supported on said rollers and provided on its lower surface with contact-peints, each oi the contact-points on said stationary plate being provided with a spring device for keeping them in contact with the points on. said rotary plate.

19. In an electric telemotor, the eombina- ICJO ICS

with said rotary plate so as to rotate the same to cause its circuit-interrupting contact-point to interrupt the circuit to the motor.

20. An electric telemotor havingthe following-named elements in combination; a current-receiver having a stationary plate provided with contact-points and a plate superposed upon said stationary plate andprovided With contact-points; an electric motor provided with a shaft and connected by Wires with said superposed plate; a Worm on said motor-shaft in mesh With a worm-wheel secured to a second shaft; a Worm on said second shaft in mesh with a Worm-Wheel secured to a third shaft having alsoA a spur-pinion thereon; and a shaft secured to said superposed plate and provided with a spur gear- Wheel in mesh with said spur-pinion.

2l. In an electric-telemotor system,the combination of the following-named elements: a combined current-receiver and circuit-interrupter having a stationary member and a rotary member each provided With contactpoints; an electric motor electrically connected with said receiver; and a shaft, .operated by said motor,connected to the valve or valverod of an engine by yielding` or-spring connections constructed and arranged so as to operate said valve in both directions Without vcompression of the springs and to prevent breakage of the valve connections by the compression of said springs at the proper time..

In an electric telemotor, the combination oi: the following-named elements: .a currenttransmitter; a combined current receiver and circuit-interrupter having a stationary member provided with contact-points and a rotary ymember provided with contactpoints, one of which is a circuit-interrupting contact-point; an electric motor; an electromagnet electrically connected to said circuitinterrupting contact-point; and means operated by said magnet to arrest the momentum of said motor.

23. In an electric telemotor, the combination of the following-named elements: a current transmitter; a combined current receiver and circuit-interrupter having a stationary member provided with contact-points and a rotary member provided with contactpoints, one of Which is a circuit-interrupting contact-point; an electric motor; an electro- Amagnet electrically connected with said circuit-interrupting contact-point; and a shortcircuiting bar operated by said magnet to arrest the momentum of the motor.

24E. In an electric telemotor, the combination of the following-named elements: an indicator-transmitting plate provided With numerous contact-points for regulating the eX- tent of movement of the object to be moved; an indicator-arm provided with a contactpoint for transmitting the current to the contact-points on said plate; means for moving said arm over said plate; a current-receiver having two members, one provided With numerous contact-points, and the other provided 4With contact-points, one of which is a circuit.-

interrupting point; and wires connecting the contact-points on said indicator-plate with the contact-points on one of the membersof said receiver.

25. In an electric telemotor, the combinaytion of the following-named elements: a

switchboard. provided with contact-points; a lever adapt-ed to open and close circuits at :said points; an indicator-plate provided With contact-points; an indicator-arm provided with a contact-point; means for mechanically and simultaneously operating said lever and said indicator-army; a curren t-receiver having a stationary member provided With numerous contact-points and a rotary member provided with contact-points one of which is a circuitinterrupting contact-point; an electric motor; Wires connecting said indicator -plate with said stationary member; wires connecting said motor with said switchboard and said rotary member; and mechanism connecting` ber and a rotary member each provided With.

contact-points, the con tact-points on said stationary member being equal in number to those on said indicator-plate and connected thereto by Wires, and one of the contactpoints on said rotary member being a circuitinterrupting point; an electric motor; Wires connecting said rotary member With said motor; and mechanism connecting said motor with said rotary member so as to rotate the same to interrupt the circuit to the motor.

27. In an electric telemotor7 the combination of the following-named elements: an indicator -plate provided with numerous contact-points for regulating the extent of movement of the object to be moved; an indicatorarm secured to a shaft and provided With a contact-point; means forrotating said shaft; an electric motor; a current-receiver having a member provided With numerous contactpoints severally connected by Wires with the contact-points on said indicator-plate, and a member provided With a circuit-interrupting contact-point and with contact-points connected by Wires With said motor; and mechanism connecting said motor With one of said members so as to rotate the same to interrupt the circuit to the motor.

28. In an electric telemotor, the combination of the following-named elements: an indicator-plate provided with numerous contact-points for regulating the extent of movement of the object to be moved; an indicatorarm provided with a contact-point; a switchboard provided With contact-points; a lever IOO IIO

ISO

adapted to open and close circuits at the con tact-points on said switchboard; means for mechanically and simultaneously operating said indicator-arm and said lever; a currentreceiver having a stationary member provided with numerous contact-points and a rotary member provided with contact-points one of which is a circuit-interrupting con- `tact-point; an electric motor; gearing connecting said motor to said rotary member; Wires connecting said indicator-plate with said stationary member; and Wires connectingl said motor with said switchboard an d said rotary member.

29. In an electric tclemotor, the combination of the 'followingdiamed elements: an indicator-plate provided with contact-points; an indicator-arm secured to a shaft and pro vided with a eontz'iet-point; a Worm-wheel on said shaft 5 a shaft provided with a worm in mesh with said Worm-Wheel; one loose and two ixed helical sleeves mounted on said worm-shaft; a switchboard provided with contact-points; a lever secured to said loose sleeve and adapted to make contact with the contact points on said switchboard; means for preventing; the revolution of said loose sleeve before the proper time; means for revolving' said \vormshaft; a current-receiver having,` a stationary member and a rotary member each provided with contact-points; an electric motor; wires connecting said indicator-plate with said stationary member; Wires connecting said motor With said rotary member and said switchboard; and mechanism connectingl said motor with said rotary member so as to rotate the same.

30. In an electric telemotor, the combination. of the fo1lo\\'ingnamed elements: a eurrent-transmitter having an indicator-plate provided With numerous contact-points, for regulating` the extent of movement of the object to be moved, and an imlieatonarm provided with a contact-peint; a current-rrceiver havingI a stationary member and a ro tary member each provided. with contzuftpoints, the contact-points on said stationz'ir)v member being equal in number to these on said indicator-plate, and one ot' the Contact points on said rotary member being a ci rcnitzinterruptingl point; an electric motor; wires connectingl the contact-points on said indicater-plate with those on said stationary member; Wires connecting said rotary member with said motor; and a shaft operated by said motor, connected to the valverod el' an engine.

3l. In an electrie-telemotor system, the combination of the following'-named ele ments: an .indicator-plate provided with nnmerous eontaetpoints for regulating,h 'the extent oi' movement ol. the object tobe moved; an indicator-arm provided with a contactpoint; a switchboard provided with contattpoints; a lever adapted te open and close circuits at the contact-points on said switchboard; mea-ns for mechanically and simul` taneously operating` said indicator-arm and said lever; a current-receiver having a sla tienary member provided with numerous contact-points and a rotary member provided with contact-points one of which is a eircuiif interruptinI contact-point; an electric motor; a poWer-transmitting shat't; gearing; conncct ing,` said motor to said rotary member and to said shaft; wires connecting said indicatorplate with said stationary member; and ivi res connecting said motor with said svfitehimard and said rotary member.

JOHN D. WIL'I'JAMSON, Ju.

XVitnesses:

C. WnsLnv Rmumm, XVILLIAM D. CLoUos. 

